Network Coding Schemes for Device-to-Device Communications Based Relaying for Cellular Coverage Extension
2015 (English)Report (Other academic)
Although network assisted device-to-device (D2D) communications is known to improve the spectraland energy efficiency of proximal communications, its performance is less understood when employedto extend the coverage of cellular networks.In this paper, we study the performance of D2D basedrange extension in terms of sum rate and power efficiency when a relaying user equipment (UE) helps to improvethe coverage for cell-edge UEs.In our design, the relaying UE has own traffic to transmit and receive to/from the cellular base station (BS) andcan operate either in amplify-and-forward (AF) or decode-and-forward (DF) modes and can make use of either digital oranalogue (PHY layer) network coding.In this rather general setting, we propose mode selection, resource allocation and power control schemesand study their performance by means of system simulations.We find that the performance of the DF scheme with network coding is superior both to the traditional cellularand the AF based relaying schemes, including AF with two-slot or three-slot PHY layer network coding.
Place, publisher, year, edition, pages
2015. , 9 p.
IdentifiersURN: urn:nbn:se:kth:diva-160505OAI: oai:DiVA.org:kth-160505DiVA: diva2:795210
FunderSwedish Foundation for Strategic Research , SM13-0008
QC 201503162015-03-152015-03-152015-03-16Bibliographically approved